What if we told you there's an opening system that has been battle-tested at the World Championship level for over a century, yet remains virtually unexplored by modern players? Enter the Schlechter Defense – a strategic masterpiece that combines rock-solid foundations with hidden tactical depths.
Named after Carl Schlechter, who used it in his legendary 1910 World Championship match against Emanuel Lasker, this opening has quietly stood the test of time as one of chess's most resilient and underestimated systems against 1.d4.
2h 19m PGN Available Memory Booster Interactive Tests
We are proud to present the 10th and final installment of the acclaimed series 1.d4 According to Dreev – a monumental project by GM Alexey Dreev and GM Pier Luigi Basso. This concluding course—Fight the Minor Lines—is one of the most important in the series, covering a wide range of rare yet tricky systems that every serious 1.d4 player must be prepared for.
Even though the title mentions “sidelines,” you will discover some of the most principled and ambitious weapons that Black can choose against 1.d4—ranging from the Dutch Defense and the Tarrasch to the Chigorin, Budapest Gambit, Albin, and more.
Sequence: 1.d4 According to Dreev »
4h 44m PGN Available Memory Booster Interactive Tests
We are proud to launch the first course in what promises to be one of the most ambitious and practical King’s Indian Defense repertoires ever created—“King’s Indian Defense According to Supi & Oliveira.” This is not just another database. It is a grandmaster’s lifelong repertoire, sharpened through top-level play and refined with deep modern analysis.
Sequence: King's Indian Defense According to Supi »
2h 50m PGN Available Memory Booster Interactive Tests
We are proud to present a major release by one of Modern Chess’s most respected authors – GM Pier Luigi Basso. His brand-new course “Top-Level Repertoire Against the Nimzo-Indian Defence – Refined” is the most complete and up-to-date guide to 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 – the most principled line against the Nimzo-Indian.
This course is not just an update – it’s a complete transformation. With 28 deeply analyzed theoretical chapters, 8 extensively annotated model games, 50 interactive test positions, a Memory Booster, and a full Video Version, this repertoire gives you everything you need to fight for an opening advantage against one of Black's most elite defenses.
8h 50m PGN Available Memory Booster Interactive Tests
The camp Catalan Refined - Full Repertoire for White after 1.d4 Nf6 2.c4 e6 3.g3 is now available as a digital product! This comprehensive course includes all the videos from the camp as well as the PGN file related to the training sessions. The material consists of 10.5 hours of video and a PGN database with 172 files!
10h 30m PGN Available Memory Booster Interactive Tests
Following the success of his first course, Strategical Repertoire Against King's Indian Defense – Part 1, IM Dejan Marjanovic continues building a powerful and practical White repertoire based on the Fianchetto System.
This time, he targets one of Black’s most respected and dynamic defenses — the Grunfeld Defense.
The starting position of the course arises after:
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2.
Here, IM Marjanovic covers both the classical Grunfeld move 5...d5 and the solid 5...c6 followed by ...d7-d5 (the Symmetrical Grunfeld).
4h PGN Available Memory Booster Interactive Tests
In this first part of his repertoire, IM Dejan Marjanovic builds a rock-solid yet highly ambitious system for White based on the Fianchetto Variation, arising after:
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.Nc3
This setup is not only positional and resilient, but also extremely annoying for KID players. Why? Because it avoids the typical KID pawn storms and sacrifices on the kingside—forcing Black into less familiar territory.
What makes this course truly special is the way IM Marjanovic blends deep strategic understanding with cutting-edge engine analysis. He consistently finds fresh ideas in critical positions, creating a modern and challenging repertoire that places serious practical pressure on Black.
2h 17m PGN Available Memory Booster Interactive Tests
We're excited to present a brand-new course by GM S.P. Sethuraman, offering a powerful and modern repertoire for Black based on the bold and dynamic Tarrasch Counter-Gambit — 1.d4 d5 2.c4 c5.
In this repertoire, GM Sethuraman explores a rare but aggressive response to the Queen’s Gambit. The move 2...c5 immediately challenges White’s center and offers Black a fast track to unbalanced positions filled with counterplay, initiative, and surprise value. The Tarrasch Counter-Gambit has gained new momentum in recent years, with elite players like Hikaru Nakamura, Vladimir Fedoseev, and Shakhriyar Mamedyarov using it across all formats.
3h 13m PGN Available Memory Booster Interactive Tests
The March edition of Strategy Wednesday, led by GM Ioannis Papaioannou, is now available as a digital product! This course delves into the strategic richness of the Nimzo-Indian Defense, one of the most respected and deeply studied openings in classical chess.
Through 4 carefully structured lectures, GM Papaioannou guides you through the key middlegame plans, typical pawn structures, and strategic decisions for both sides. Whether you play the Nimzo-Indian as Black or encounter it as White, this course will boost your understanding of its most critical ideas and long-term plans.
Sequence: 1.d4 Pawn Structures »
6h PGN Available Interactive Tests
We are happy to present the next installment in the acclaimed 1.d4 According to Dreev series — a powerful and practical repertoire against one of Black’s most solid defenses: the Queen’s Indian Defense.
After the moves 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3, White enters a highly positional battleground where deep understanding often triumphs over memorization.
Sequence: 1.d4 According to Dreev »
4h 10m PGN Available Memory Booster Interactive Tests